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Ann Thorac Surg 2001;72:1557-1561
© 2001 The Society of Thoracic Surgeons

Original article: cardiovascular

Functional status of the hand after radial artery harvesting: results in 3,977 cases

Zile Singh Meharwal, MCh*a, Naresh Trehan, MDa

a Escorts Heart Institute and Research Centre, New Delhi, India

Accepted for publication June 29, 2001.

* Address reprint requests to Dr Meharwal, Escorts Heart Institute and Research Centre, Okhla Rd, New Delhi 110 025, India
e-mail: meharwal{at}hotmail.com

Background. The radial artery is being used as a conduit of choice over saphenous vein with increasing frequency. We analyzed early and midterm results of coronary artery bypass grafting using radial artery as one of the conduits. The functional outcome of the hand after radial artery harvesting was analyzed.

Methods. The radial artery was used in 3,977 patients undergoing coronary artery bypass grafting between December 1996 and November 2000. Modified Allen’s test was performed preoperatively in the ward and pulse oxymetry was used in the operating theater to assess the collateral circulation of the hand. A total of 4,172 anastomoses were performed using a radial artery. The patients were followed up at regular intervals in the outpatient clinic or were sent questionnaires. The functional results of the hand were assessed. Follow-up angiography was performed in 104 patients at a mean of 18 months.

Results. The hospital mortality was 0.8%. Perioperative myocardial infarction occurred in 1.3% of patients. The average number of grafts was 3.12. No patient had acute ischemic injury of the hand. Follow-up was complete in 94% of patients. Late infection developed in 0.4% of patients. Numbness and paresthesias continued in 6.5% and 3% patients, respectively, after 3 months. The patency rate of the radial and left internal mammary artery was 92.3% and 96.0%, respectively, at a mean of 18 months.

Conclusions. Use of radial artery for coronary artery bypass grafting is associated with low morbidity and good functional outcome of the hand. It can be used more frequently as the conduit of choice after the internal mammary artery.




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